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Existence of non-constant curvature metrics on RP^2 with ω1=ω2=ω3 equal to twice the systole

Determine whether there exist Riemannian metrics g on the real projective plane RP^2 such that the first three widths ω1(RP^2,g), ω2(RP^2,g), and ω3(RP^2,g) all equal 2·sys(RP^2,g), where sys(RP^2,g) denotes the length of the shortest non-contractible loop, and yet the metric g does not have constant sectional curvature.

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Background

In Section 4, the authors analyze the implications of having the first three widths equal and employ min-max and geometric arguments to obtain rigidity under certain conditions. They show that when the entire volume spectrum matches that of the canonical RP2, the metric must be isometric to the standard constant curvature one.

They then highlight a more specific scenario relating widths to the systole and explicitly note that they do not know of any examples where ω1=ω2=ω3 equals twice the systole without constant curvature, leaving open the existence of such metrics.

References

Remark 4.1. We do not know of any examples of RP with ω = ω = ω1= 2 2sys that do not have constant curvature.

Rigidity theorems for the area widths of Riemannian manifolds (2408.14375 - Ambrozio et al., 26 Aug 2024) in Remark 4.1, Section 4